From a2fc0f6a6ddf884ace3c96a0d4f09f0932e6db32 Mon Sep 17 00:00:00 2001
From: Måns Rullgård <mans@mansr.com>
Date: Wed, 17 Dec 2008 00:54:54 +0000
Subject: ARM: replace "armv4l" with "arm"

Originally committed as revision 16179 to svn://svn.ffmpeg.org/ffmpeg/trunk
---
 libavcodec/arm/mpegvideo_armv5te.c | 100 +++++++++++++++++++++++++++++++++++++
 1 file changed, 100 insertions(+)
 create mode 100644 libavcodec/arm/mpegvideo_armv5te.c

(limited to 'libavcodec/arm/mpegvideo_armv5te.c')

diff --git a/libavcodec/arm/mpegvideo_armv5te.c b/libavcodec/arm/mpegvideo_armv5te.c
new file mode 100644
index 0000000000..b213cf1de3
--- /dev/null
+++ b/libavcodec/arm/mpegvideo_armv5te.c
@@ -0,0 +1,100 @@
+/*
+ * Optimization of some functions from mpegvideo.c for armv5te
+ * Copyright (c) 2007 Siarhei Siamashka <ssvb@users.sourceforge.net>
+ *
+ * This file is part of FFmpeg.
+ *
+ * FFmpeg is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation; either
+ * version 2.1 of the License, or (at your option) any later version.
+ *
+ * FFmpeg is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with FFmpeg; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
+ */
+
+#include "libavcodec/avcodec.h"
+#include "libavcodec/dsputil.h"
+#include "libavcodec/mpegvideo.h"
+
+void ff_dct_unquantize_h263_armv5te(DCTELEM *block, int qmul, int qadd, int count);
+
+#ifdef ENABLE_ARM_TESTS
+/**
+ * h263 dequantizer supplementary function, it is performance critical and needs to
+ * have optimized implementations for each architecture. Is also used as a reference
+ * implementation in regression tests
+ */
+static inline void dct_unquantize_h263_helper_c(DCTELEM *block, int qmul, int qadd, int count)
+{
+    int i, level;
+    for (i = 0; i < count; i++) {
+        level = block[i];
+        if (level) {
+            if (level < 0) {
+                level = level * qmul - qadd;
+            } else {
+                level = level * qmul + qadd;
+            }
+            block[i] = level;
+        }
+    }
+}
+#endif
+
+static void dct_unquantize_h263_intra_armv5te(MpegEncContext *s,
+                                  DCTELEM *block, int n, int qscale)
+{
+    int level, qmul, qadd;
+    int nCoeffs;
+
+    assert(s->block_last_index[n]>=0);
+
+    qmul = qscale << 1;
+
+    if (!s->h263_aic) {
+        if (n < 4)
+            level = block[0] * s->y_dc_scale;
+        else
+            level = block[0] * s->c_dc_scale;
+        qadd = (qscale - 1) | 1;
+    }else{
+        qadd = 0;
+        level = block[0];
+    }
+    if(s->ac_pred)
+        nCoeffs=63;
+    else
+        nCoeffs= s->inter_scantable.raster_end[ s->block_last_index[n] ];
+
+    ff_dct_unquantize_h263_armv5te(block, qmul, qadd, nCoeffs + 1);
+    block[0] = level;
+}
+
+static void dct_unquantize_h263_inter_armv5te(MpegEncContext *s,
+                                  DCTELEM *block, int n, int qscale)
+{
+    int qmul, qadd;
+    int nCoeffs;
+
+    assert(s->block_last_index[n]>=0);
+
+    qadd = (qscale - 1) | 1;
+    qmul = qscale << 1;
+
+    nCoeffs= s->inter_scantable.raster_end[ s->block_last_index[n] ];
+
+    ff_dct_unquantize_h263_armv5te(block, qmul, qadd, nCoeffs + 1);
+}
+
+void MPV_common_init_armv5te(MpegEncContext *s)
+{
+    s->dct_unquantize_h263_intra = dct_unquantize_h263_intra_armv5te;
+    s->dct_unquantize_h263_inter = dct_unquantize_h263_inter_armv5te;
+}
-- 
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